Propagation Effects Handbook for Satellite Systems - DESCANSO ...
Propagation Effects Handbook for Satellite Systems - DESCANSO ...
Propagation Effects Handbook for Satellite Systems - DESCANSO ...
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Frequency<br />
(GHz)<br />
10<br />
15<br />
20<br />
30<br />
40<br />
80<br />
1 R<br />
Table 6.2-2. Water Vapor Density and Temperature<br />
Correction Coefficients<br />
SELECT:<br />
FREOUENCY<br />
OROUNO STAllON AL171UOE<br />
SURFACE WA7ER VAPOR DENSllY @ ($/ma),<br />
OR SURFACE RELATIVE HUMID 8Y<br />
SURFACE 7EMPERA7URE To<br />
ELEVA710N ANOLE o<br />
DETERMINE ZENITH AITENUATION<br />
+’ FOR 7.S @ms U O ANO ZI°C<br />
AT OIVEN ALT17dDE USINO<br />
f10URES2.10RTABLE S2.1<br />
I<br />
COMPU7E<br />
A~l -(bpMpo-7.5@ma)<br />
bp OWEN IN FIOURE 6.2-2.<br />
I<br />
Pf) MAY BE COMPUTED FROM WEATNER<br />
DATA - SEE SEC710N S.2-5.<br />
I<br />
Water Vapor Density<br />
Correction<br />
bP<br />
2.1OX 10-3<br />
6.34 X 10 -3<br />
3.46 X 10 -2<br />
2.37 X 10 -2<br />
2.75x 10 -2<br />
9*59 x 10-2<br />
1.22 x 10-1<br />
1 050X 10-1<br />
,<br />
I<br />
I<br />
COMPUTE<br />
A A C 2 - CT (21% - 1~<br />
CT OIVEN IN FIOURE 0.2.2.<br />
I<br />
* ?<br />
COMPUTE<br />
~“ . ~’+ tic, + AAc2<br />
1<br />
COMPUTE<br />
AC-Ae’ CSC9<br />
I<br />
OETERMINE STANOARD DEVIA?lON O“ FOR<br />
OPEAA71N0 FREOUENCY FROM FIOUFtE 8.2-1.<br />
COMW7E<br />
O-o” csce I<br />
Temperature<br />
Correction<br />
CT<br />
2.60 X 10 -4<br />
4.55 x 10-4<br />
1.55 x 10-3<br />
1.33 x 10-3<br />
1097 x 10-3<br />
5.86x 10 -3<br />
5.74 x 10-3<br />
6.30 X 10-3<br />
Figure 6.2-3. Technique <strong>for</strong> Computing Mean Clean Air Attenuation<br />
6-11
Change language